Touch module, touch display module and manufacturing method of touch module

Abstract

A touch module includes a flexible base, a moisture blocking film and a touch structure. The moisture blocking film has a first surface and a second surface opposite to the first surface, and the first surface directly contacts the flexible base. The touch structure is disposed on the second surface of the moisture blocking film and includes a first conductive layer disposed on the second surface, a first insulating layer disposed on the first conductive layer, a second conductive layer disposed on the first insulating layer and a second insulating layer disposed on the second conductive layer. An area of the moisture blocking film is greater than or equal to the sum of the areas of the touch electrode region and the peripheral circuit region of the touch structure. The water vapor transmission rate of the moisture blocking film is less than 5.0*10−4 g/(m2*day).

What is claimed is: 
     
       1. A touch display module, comprising:
 a touch module, comprising:
 a flexible base, wherein a thickness of the flexible base ranges from 25 micrometers to 100 micrometers; 
 a moisture blocking film disposed on the flexible base, wherein the moisture blocking film has a first surface and a second surface opposite to the first surface, the first surface directly contacts the flexible base, and a thickness of the moisture blocking film ranges from 1 micrometer to 5 micrometers; and 
 a touch structure disposed on the second surface of the moisture blocking film, comprising:
 a first conductive layer directly disposed on the second surface of the moisture blocking film; 
 a first insulating layer disposed on the first conductive layer and covering the first conductive layer; 
 a second conductive layer directly disposed on the first insulating layer; and 
 a second insulating layer disposed on the second conductive layer and covering the second conductive layer; and 
 
 
 a display module attached to the touch module, wherein the display module comprises a first substrate, a second substrate and a display medium layer disposed between the first substrate and the second substrate, and the touch structure is located between the display module and the moisture blocking film, 
 wherein the touch structure has a touch electrode region and a peripheral circuit region, and an area of the moisture blocking film is greater than or equal to a sum of an area of the touch electrode region and an area of the peripheral circuit region in a top view direction of the touch module; 
 wherein a water vapor transmission rate of the moisture blocking film is less than 5.0*10 −4  g/(m 2 *day) at a temperature of 60° C. and a relative humidity of 90%; 
 wherein the area of the moisture blocking film is greater than an area of the display module. 
 
     
     
       2. The touch display module of  claim 1 , wherein the flexible base includes polyimide, polyethylene terephthalate or a combination thereof. 
     
     
       3. The touch display module of  claim 1 , wherein the moisture blocking film includes silicon oxide, silicon nitride, silicon oxynitride or a combination thereof. 
     
     
       4. The touch display module of  claim 1 , wherein the area of the moisture blocking film is greater than the area of the touch electrode region in the top view direction of the touch module. 
     
     
       5. The touch display module of  claim 1 , wherein the display module has a display region, and the area of the moisture blocking film is greater than an area of the display region in the top view direction of the touch module. 
     
     
       6. The touch display module of  claim 1 , wherein the display module includes a liquid crystal display panel, an organic light emitting diode display panel, a micro light emitting diode display panel or a mini light emitting diode display panel. 
     
     
       7. A manufacturing method of a touch display module, comprising:
 forming a touch module, comprising:
 providing a flexible base; 
 forming a moisture blocking film on the flexible base, wherein the moisture blocking film has a first surface and a second surface opposite to the first surface, and the first surface directly contacts the flexible base; and 
 forming a touch structure on the moisture blocking film, comprising following steps:
 forming a first conductive layer on the second surface of the moisture blocking film, wherein the first conductive layer directly contacts the second surface; 
 forming a first insulating layer on the first conductive layer, wherein the first insulating layer covers the first conductive layer; 
 forming a second conductive layer on the first insulating layer; and 
 forming a second insulating layer on the second conductive layer, wherein the second insulating layer covers the second conductive layer; and 
 
 
 attaching the touch module to a display module, wherein the display module comprises a first substrate, a second substrate and a display medium layer disposed between the first substrate and the second substrate, and the touch structure is located between the display module and the moisture blocking film, 
 wherein a water vapor transmission rate of the moisture blocking film is less than 5.0*10 −4  g/(m 2 *day) at a temperature of 60° C. and a relative humidity of 90%; 
 wherein an area of the moisture blocking film is greater than an area of the display module. 
 
     
     
       8. The manufacturing method of  claim 7 , wherein a thickness of the flexible base ranges from 25 micrometers to 100 micrometers, and a thickness of the moisture blocking film ranges from 1 micrometer to 5 micrometers. 
     
     
       9. The manufacturing method of  claim 7 , wherein the flexible base includes polyimide, polyethylene terephthalate or a combination thereof, and the moisture blocking film includes silicon oxide, silicon nitride, silicon oxynitride or a combination thereof.